Exhaust system



FIG. 1 is a perspective view of an exhaust system showing my new design.

FIG. 2 is a left side view of the exhaust system;

FIG. 3 is a rear view of the exhaust system;

FIG. 4 is a right side view of the exhaust system;

FIG. 5 is a front view of the exhaust system;

FIG. 6 is a top view of the exhaust system; and,

FIG. 7 is a bottom view of the exhaust system.

The broken lines showing in the figures are included for the purpose of illustrating portions of the exhaust system that form no part of the claimed design. The dash-dot lines showing in the figures are included for defining the bounds of the claimed design that form no part therof. 

CLAIM The ornamental design for an exhaust system, as shown and described. 